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Post by JohnV on Nov 6, 2020 8:24:51 GMT
came across this as reading news, very interesting but I am unsure, how clean is the production of ammonia ?
the comparison of Kwh per litre of different fuels is also of interest
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Post by peterboat on Nov 6, 2020 9:49:05 GMT
Amonia is normally the medium that is used to transport hydrogen, so if that is what they are using its either very clean from electrolysis using excess electric from wind turbines or dirty from coal, gas or oil. Thats what I have read in the past.
Also they are considering small nuclear reactors for commercial ships and your favorite sails
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Post by bodger on Nov 6, 2020 10:01:29 GMT
most ammonia is made from natural gas, and is very clean except if ammonia contaminates the waste water used in the process.
the downside is that fossil fuel is used, and CO2 is the main by-product.
so it is a clean and very convenient fuel (as a relatively safe and easily handled source of hydrogen) but it is not low-carbon.
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Post by Deleted on Nov 6, 2020 10:05:25 GMT
Amonia is normally the medium that is used to transport hydrogen, so if that is what they are using its either very clean from electrolysis using excess electric from wind turbines or dirty from coal, gas or oil. Thats what I have read in the past. Also they are considering small nuclear reactors for commercial ships and your favorite sails The sails in question are rigid aerofoils which are supported by un-stayed masts and capable of rotating 360 degrees. They are intended as an assistance to conventional drive systems when the ship is already at sea. |
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Post by JohnV on Nov 7, 2020 8:17:40 GMT
Amonia is normally the medium that is used to transport hydrogen, so if that is what they are using its either very clean from electrolysis using excess electric from wind turbines or dirty from coal, gas or oil. Thats what I have read in the past. Also they are considering small nuclear reactors for commercial ships and your favorite sails The sails in question are rigid aerofoils which are supported by un-stayed masts and capable of rotating 360 degrees. They are intended as an assistance to conventional drive systems when the ship is already at sea. I understand that the experiments with the Magnus effect (Flettner rotors) were successful but I haven't seen anything about them for quite a while |
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Post by Deleted on Nov 7, 2020 11:17:40 GMT
This is what I was thinking of. Picture shamefully copied from the Daily Mail.  That's a lovely flat-calm sea. I wonder how quickly those sails retract. |
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Post by Deleted on Nov 7, 2020 19:15:52 GMT
This is what I was thinking of. Picture shamefully copied from the Daily Mail. That's a lovely flat-calm sea. I wonder how quickly those sails retract. And I was like "are you sure they aren't funnels?"  |
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Post by Deleted on Nov 7, 2020 19:41:01 GMT
This is what I was thinking of. Picture shamefully copied from the Daily Mail. That's a lovely flat-calm sea. I wonder how quickly those sails retract. And I was like "are you sure they aren't funnels?" Only the first three. The fourth is a dummy used for the stowage of luggage. |
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Post by Deleted on Nov 7, 2020 19:44:39 GMT
What about the fifth one?
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Post by Deleted on Nov 7, 2020 19:48:49 GMT
What about the fifth one? Damn your accursed maths skills. |
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